static void
fetch_done(isc_task_t *task, isc_event_t *event) {
dns_lookup_t *lookup = event->ev_arg;
dns_fetchevent_t *fevent;
UNUSED(task);
REQUIRE(event->ev_type == DNS_EVENT_FETCHDONE);
REQUIRE(VALID_LOOKUP(lookup));
REQUIRE(lookup->task == task);
fevent = (dns_fetchevent_t *)event;
REQUIRE(fevent->fetch == lookup->fetch);
lookup_find(lookup, fevent);
}
static AvahiSRBLookup* lookup_add(AvahiSRecordBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiLookupFlags flags, AvahiKey *key) {
AvahiSRBLookup *l;
assert(b);
assert(!b->dead);
if ((l = lookup_find(b, interface, protocol, flags, key)))
return lookup_ref(l);
if (!(l = lookup_new(b, interface, protocol, flags, key)))
return NULL;
return l;
}
isc_result_t
dns_lookup_create(isc_mem_t *mctx, dns_name_t *name, dns_rdatatype_t type,
dns_view_t *view, unsigned int options, isc_task_t *task,
isc_taskaction_t action, void *arg, dns_lookup_t **lookupp)
{
isc_result_t result;
dns_lookup_t *lookup;
isc_event_t *ievent;
lookup = isc_mem_get(mctx, sizeof(*lookup));
if (lookup == NULL)
return (ISC_R_NOMEMORY);
lookup->mctx = NULL;
isc_mem_attach(mctx, &lookup->mctx);
lookup->options = options;
ievent = isc_event_allocate(mctx, lookup, DNS_EVENT_LOOKUPDONE,
action, arg, sizeof(*lookup->event));
if (ievent == NULL) {
result = ISC_R_NOMEMORY;
goto cleanup_lookup;
}
lookup->event = (dns_lookupevent_t *)ievent;
lookup->event->ev_destroy = levent_destroy;
lookup->event->ev_destroy_arg = mctx;
lookup->event->result = ISC_R_FAILURE;
lookup->event->name = NULL;
lookup->event->rdataset = NULL;
lookup->event->sigrdataset = NULL;
lookup->event->db = NULL;
lookup->event->node = NULL;
lookup->task = NULL;
isc_task_attach(task, &lookup->task);
result = isc_mutex_init(&lookup->lock);
if (result != ISC_R_SUCCESS)
goto cleanup_event;
dns_fixedname_init(&lookup->name);
result = dns_name_copy(name, dns_fixedname_name(&lookup->name), NULL);
if (result != ISC_R_SUCCESS)
goto cleanup_lock;
lookup->type = type;
lookup->view = NULL;
dns_view_attach(view, &lookup->view);
lookup->fetch = NULL;
lookup->restarts = 0;
lookup->canceled = ISC_FALSE;
dns_rdataset_init(&lookup->rdataset);
dns_rdataset_init(&lookup->sigrdataset);
lookup->magic = LOOKUP_MAGIC;
*lookupp = lookup;
lookup_find(lookup, NULL);
return (ISC_R_SUCCESS);
cleanup_lock:
DESTROYLOCK(&lookup->lock);
cleanup_event:
ievent = (isc_event_t *)lookup->event;
isc_event_free(&ievent);
lookup->event = NULL;
isc_task_detach(&lookup->task);
cleanup_lookup:
isc_mem_putanddetach(&mctx, lookup, sizeof(*lookup));
return (result);
}
